No.
The problem with your suggestion is, "Hey man come and shoot this cop for 10 mins so I can log off." Another problem with this is at federal events it takes a while to deal with a situation. Say we get one guy in restraints and bring him outside of the prison and the cop escorting him dies, you will either leave him outside or push out to get him. After 10 mins your saying he should be able to log off because we are to busy dealing with the rest of the people there. When someone does something illegal you should understand there are consequences to your actions. You also have to put into account the amount of time we put into this, imaging chasing someone for 30 mins around the map and not making it back to HQ within 10 minutes, why should he be able to log off after wasting 30 mins of an officers time?